Try CubexSoft MBOX to Gmail Converter and effortlessly migrate multiple MBOX emails to Gmail account at a single time process. The tool has the capability to save the whole folder hierarchy of the MBOX emails during the migration. If you want to export bundles of files MBOX to Gmail account, then you can go with its license edition that supports batch migration from MBOX data to Gmail and professionally understand for how to Save MBOX data to Gmail account. Read More: https://www.cubexsoft.com/mbox-to-gmail/